Touch panel and electronic device using same
a technology of electronic devices and touch panels, applied in the field of touch panels and electronic devices, can solve the problems of reducing the response time of touch operations and increasing the efficiency of the processing uni
Inactive Publication Date: 2011-06-30
HONG FU JIN PRECISION IND (SHENZHEN) CO LTD +1
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Benefits of technology
The present patent relates to a touch panel with quick response speed and an electronic device using the touch panel. The technical effect of the patent is to provide a touch panel with high efficiency and quick response time for touch operations. The touch panel includes a high-frequency current oscillator, a number of independent touch units, and a direct current power. Each touch unit includes an upper electrode layer, a lower electrode layer, and a liquid crystal layer. The high-frequency current generated by the oscillator flows from the upper electrode layer to the lower electrode layer. Each touch unit also includes a rectifier circuit, a switch, and a comparator. The comparator compares the current with a reference current and generates control signals to turn on or off the switch. The technical effect of the patent is to provide a touch panel with quick response speed and an electronic device using the touch panel.
Problems solved by technology
As an electronic device using a conventional touch panel needs a processing unit of the electronic device to determine the touched position, which may increase efficiency of the processing unit and but decrease response time of touch operations.
Method used
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Embodiment Construction
[0009]Referring to FIGS. 1-2, a touch panel 10 in accordance with an exemplary embodiment is shown. The touch panel 10 includes a high-frequency current oscillator 11, a number of independent touch units 12, a direct current power 15. For the simplicity of description, only one touch unit 12 is illustrated in FIG. 2, together with its associated circuit components. A circuit for each touch unit 12 includes a rectifier circuit 13, a switch 14, and a comparator 16. The oscillator 11 is configured to supply high-frequency current to the touch units 12. In the exemplary embodiment, the touch units 12 are arranged in a matrix. The number of the touch units 12 can vary according to need.
[0010]Each touch unit 12 includes an upper electrode layer 121, a lower electrode layer 122, a liquid crystal layer 123 arranged between the upper electrode layer 121 and the lower electrode layer 122, and an emitting layer 124 arranged below the lower electrode layer 122. The upper electrode layer 121 and...
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An electronic device is provided. The electronic device includes a touch panel. The touch panel includes touch units, an oscillator, rectifier circuits, a direct current power, switches, and comparators. Each touch unit includes an upper electrode layer, a lower electrode layer, a liquid crystal layer, and an emitting layer. The oscillator is configured to output a high-frequency current to the upper electrode layers. Each rectifier circuit is configured to convert the high-frequency current to the direct current. Each comparator is configured to determine whether the direct current is less than a reference current. When the touch panel is touched, the high-frequency current deceases. The direct current deceases. The comparator outputs a control signal to turn on the switch. The direct current power supplies electricity to control the liquid crystal molecules to be arranged in order, the light emitted from the emitting layer thus passes through the liquid crystal layer.
Description
BACKGROUND[0001]1. Technical Field[0002]The present disclosure relates to touch panels and electronic devices and, particularly, to a touch panel with quick response speed and an electronic device using the touch panel.[0003]2. Description of Related Art[0004]Nowadays, electronic devices with touch panels are very popular. Conventionally, when a position of a touch panel is touched by an object, such as a finger or a stylus, the touch panel generates a signal including the touched position and transfers the signal to a processing unit of an electronic device using the touch panel. The processing unit then determines which position is touched according to the signal. As an electronic device using a conventional touch panel needs a processing unit of the electronic device to determine the touched position, which may increase efficiency of the processing unit and but decrease response time of touch operations.BRIEF DESCRIPTION OF THE DRAWINGS[0005]The components in the drawings are not...
Claims
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IPC IPC(8): G09G3/36G06F3/045
CPCG06F3/044G06F3/0412G06F3/0445
Inventor YANG, SONG-LING
Owner HONG FU JIN PRECISION IND (SHENZHEN) CO LTD